The middle ear is not a body site at which anaphylactic reactions (type I in the classification of Coombs and Gell) predominate. Non-IgE-mediated reactions preferentially occur in response to an allergen. Out of 64 guinea pigs, 48 were sensitized and
Finding alternative hair dyes for individuals allergic to para-phenylenediamine (PPD) has been difficult. Newer permanent and demipermanent hair dyes that have replaced PPD with para-toluenediamine sulfate (PTDS) are now available. We examined whether individuals allergic to PPD will tolerate PPD-free
Cutaneous and ocular toxicology, 28(3), 104-106 (2009-06-26)
p-Phenylenediamine (PPD) is an important hair dye allergen, but there remains a reasonable suspicion that other hair dye chemicals may also be responsible for a proportion of the clinical burden of hair dye allergy. To assess to what extent presently
The mutagenic effects of 2,4-dinitrotoluene (2,4-DNT), purified and technical grades, 3,5-DNT, 2,4-diaminotoluene (2,4-DAT), and 2,5-DAT were tested in mice using one or more of the following: the dominant lethal assay, the sperm morphology test and/or the recessive spot test. Compounds
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